MySME.com domain name is for sale.

SME is a common term used for Small and Medium Enterprise. The famous Alibaba.com's success was attributed to its trading platform targeted at linking SME together and trading by buying and selling products. It also serves as a business directory and provides a forum and internal messenging system for communication.

SME is also a common term used for Subject Matter Expert.

The following are the known definitions to date:
The acronym for small and medium sized enterprise. Small enterprises have less than 50 employees and turnovers of less than E10 million, while ...
www.international.lga.gov.uk/european_work/glossary.html

small and medium-sized enterprises as defined in the Commission Recommendation of 6 May 2003 concerning the definition of micro, small and medium-sized enterprise.
www.reach-chemadvice.com/reach/glossary.php

An individual who exhibits the highest level of expertise in performing a specialized job, task, or skill within the organization.
www.cmpp.net/CMS/Media/Docs/ITIL/ITIL%20Glossary%20of%20Terms01.doc

Subject Matter Experts are those who provide expertise in the content of an instructional area. SMEs can either contribute to or develop the training.
wdtb.noaa.gov/support/glossary.asp

Small to medium-sized business enterprise; usually plural, SMEs. (OED)
www.bl.uk/aboutus/stratpolprog/redeflib/glossary/index.html

Under European rules, Objective One money is available for small and medium sized enterprises (SMEs) and micro-businesses.
www.objectiveone.com/O1htm/glossary.htm

Cumulative sales growth rates of 50 percent or more over a three-year period, covering the years 1997–2000, and is applicable to all Canadian SME s from the self-employed up to firms with fewer than 500 employees.
strategis.ic.gc.ca/epic/site/sme_fdi-prf_pme.nsf/en/01068e.html

An enterprise which employs less than 250 people; has an annual turnover of less than €50m and/or balance sheet assets of less than €43m; and has no more than 25% of its capital or voting rights owned by a larger firm or public body (European Commission definition).
www.hipp.org.uk/reference/glossary.html

An independent business managed by its owner or part owners and having a small market share either by number of employees or turnover.
www.planningportal.gov.uk/england/professionals/en/1115310689529.html

An organisation with fewer than 50 employees is classed as ‘small’
and those with fewer than 250 as ‘medium’.
public.exorgroup.net/index.cfm

A variety of definitions exist, the most widely accepted one being ‘a business employing fewer than 250 people’.
www.booksites.net/download/chadwickbeech/Glossary.htm

Subject Matter Expert - a person attending a training class or meeting who has in-depth knowledge to share about the topic being presented or discussed.
www.dartmouth.edu/~oasis/communications/glossary.html

Small to Medium size Enterprise (SME) is generally defined as businesses with less than 250 employees.
www.globalweb.co.uk/glossary.html

A subject-matter expert (SME) is a person knowledgeable about a given topic or subject area.
infoaccess.wiki.zoho.com/Search-Glossary.html

Categorised as any organisation that employ less than 250 employees.
www.salisbury.gov.uk/council/doing-business-with-the-council/doing-business-glossary.htm

Small and Medium business Enterprises (the DTI definition of a small business is where there are no more than 50 employees and a medium size business is one where there are no more than 249 employees)
www.lbhf.gov.uk/Directory/Business/Tenders_and_contracts/Terminology/58840_Terminology_MZ.asp

Small-to-medium enterprise is a convenient term for segmenting businesses and other organizations that are somewhere between the "small office-home office" (SOHO) size and the larger enterprise. The European Union has defined an SME as a legally independent company with no more than 500 employees.
www.synergy-uk.com/glossary.php

In ICAN, Secure Messaging Exchange (SME) uses advanced cryptographic techniques to ensure security, verifiability, and nonrepudiation of messages exchanged electronically.
docs.sun.com/app/docs/doc/820-1228/6nctp1n5h

Small and Medium-sized Enterprises or SMEs are companies whose headcount or turnover falls below certain limits. The abbreviation SME occurs commonly in the EU and in international organizations, such as the World Bank, the United Nations and the WTO, but less so in the US. ...
catalystconsultingpartners.com/glossary.html

Small to Medium Enterprise. There is no universal definition of this. For the purposes of our guides we use the definition of organisations with between 30 and 200 employees.
www.vvsgidas.lt/get.php

SME or Denník SME (literally the "WE ARE Daily") is the second most widely read and very influential daily in Slovakia.
en.wikipedia.org/wiki/SME (newspaper)

Small and Medium-sized Enterprise; Small- to Medium-Sized Enterprise; Subject Matter Experts; Society of Manufacturing Engineers
en.wiktionary.org/wiki/SME