Hi, and welcome, though I'm sorry a stubborn fissure has brought you here. This is a site with a lot of great people and information about fissures including diet, supplements, medications, surgical options, etc. A lot of members use Vaseline too, especially prior to a BM to provide some protection of the wound.

As jr2 said before me welcome... I myself am relatively new to this form, and can tell you in the short time I've been here I've received a great deal of helpful advice.
Vaseline was definitely a good help but on it's own it didn't provide me enough relief. I still use it on a regular basis... However, in combination with a increasingly more personalized diet and Miralax I'm almost feeling back to normal if not better then before.