Using social media to promote your business

I joined a social network recently, which is just the thing for promoting one's business. I have noticed that everybody wants me to 'like' their page, presumably because they value my design skills and insight. I have had a look at some and offered constructive feedback, where I feel it is appropriate.

In order to do so I equipped myself with a number of pre-printed postcards, and these are part of Arthur Gravy's Time Well Spent range of stationery (available from your local ASDA). Here is the front (click to enlarge):

And here are my thoughts:

Whereas I used this (slightly cheaper) design to comment on Vomedia's page, as I considered their offer rather gracious and hope to win their competition:

It's the personal touch that is important, don't you think?