What do you think are the top 5 vendors that offer Social Media products and services?

[corberasd]

...and also what do you understand by being asked this question? I have been asked this and I think it is a little too broad to answer in a simple list. What do you think?

[Knight John O]

Remember that there can be two major categories of vendors. Those that are offline (vendors that deal on magazines and newspapers and others offline), while those ones that are online based. So it depends on what they want from you.

Hope it helps