I think they're unavoidable for a topic such as this. Gear is, like it or not, an essential part of making and enjoying great coffee and there's a lot of it available.
Asking for an honest product recommendation doesn't make for a bad question; asking in a manner that invites dozens of answers due to a lack of scope and constraint makes for a bad question. There are only a limited number of double-walled glass presses in a 2 cup size, and I'd be quite put off if I came to a site all about coffee and couldn't ask which one was also likely to hold up in a dishwasher.
Questions that don't limit the potential number of answers that could be received are by nature too broad, and you have a close reason for those available to you. I'd wait, see if these actually become a problem, and enjoy giving thorough answers to the more interesting ones while you do. It's fine to have a zero-tolerance spam policy as many of our other sites have adopted, and an inclination to burn link-only or astroturf-like answers as you see them.
But don't stop yourself from recommending a brand if you're happy with that brand. I love Breville's products and I recommended one of their grinders to someone earlier today, in the course of writing a thorough answer. And if spammers start writing comprehensive, thorough answers that receive up-votes then we can basically say mission accomplished.
Software Recommendations does a pretty good job of getting this right, and I'm sure that you could too. But, please, don't solve problems that you don't yet have - these types of questions are quite common in this topic, make sure you're doing yourselves a favor before shutting them down and you can't do that based on less than 100 questions so far in a private beta.