If you work with or have an interest in SharePoint, I encourage others to step up and blog about it. Why? Because there are so many levels within SharePoint that it could be useful to an audience that might similar to you and be helpful to get others started.
Does it cost to blog?
No, it’s free with WordPress. This site you are reading is Word Press and it is FREE.
What if I don’t like to write?
Who really likes to write anyway? It can be brief and to the point. Its the point that matters, not the length of content.
What will I gain from this?
A way to store and share your knowledge.
Are there other ways to do this?
Depending on your resources and skill sets I suppose there is.