If you are passionate about contributing to this space, consider your niche. The market for generic "gay sex tips" is saturated. What’s needed are:
It is important to note that the industry is watching these blogs. Literary agents now have interns specifically trawling gay relationship blogs for undiscovered talent. The web series The Outs started as a blog. Boy Meets Boy started as a column.
The most important part of any intimate encounter is mutual respect, trust, and communication.