The Blueroom is a community site for teachers to share experiences and material, help each other, and to improve teaching quality and experience. An year ago I wanted to join this group. The only condition the group had was that my name should be seen in the website of some educational institute. The website of the college where I have been teaching as guest faculty was not worth referring. The site did not mention the name of their own principal. Most of the information was stale and insipid. Hence I gave reference of a school whose website mentions my name as academic adviser. That was enough to become a member of the Blueroom group.
There are some software companies like Visual Paradigm, Enthought etc., who give away free copies of their good software products to faculty members of educational institutes. To give away these high quality products, they expect requests from mail IDs of institutes as proofs. Simple and elegant.
But, we need email IDs with the domain name of institutes that the companies can verify. Unfortunately, many colleges do not have their own mail box services. The teaching staff uses gmail (hotmail is not as hot any more.)
In this age, web presence is critical. Using official mail ID is important as discussed in the last post.