It really depends on a few factors.

Are you easily hurt when relationships fall apart? If so, then take more time finding the right potential partners. The highs in our lifestyle tend to be higher, so the lows can be lower. Being "abandoned" by your dominant is one of the lowest of the lows... so you should try to avoid that.

Are you taking precautions to ensure your safety even when making fast friends? If so, it's less of a concern.

Are you new to this lifestyle? If so, again, take more time. There are both well meaning wannabe and new dominants who may not be as up front about their status early on, and noobs with noobs can lead to mistakes that can range from driving you away from the site to (the extreme) driving you away in an ambulance.... and there are predators who prey on new submissives, some will use you and dump you, some will mistrain you to accept abusive practices.

And then... all that aside, if you have good instincts and get all the right vibes, while I still suggest proceeding with caution, don't let opportunity knock at your door unanswered... (you can ask jeanne about opportunities not squandered. )