One of the reasons that some people choose not to contribute to their company blog is their concern that their grammar is not up to snuff.
If you fall into this camp, here are a few links that might help you:
Future-perfect (ok – these are folks that will check it for you, but they also have some great links so you can help yourself)
One of the beautiful things about a blog – you are probably the harshest critic about your own grammar (unless, of course, your blog is about grammar. Then everyone that reads it will be focused on finding, and pointing out, every little mistake you have made. I highly recommend that you do not write a grammar blog – unless you are open to incessant critiquing).
That being said, focus on what you want to say, not how you want to say it. The secret to a successful blog is to be interesting, not to be grammatically correct. (Just out of curiosity, how many mistakes did you find in this post