There are two signature plugin feeds for WordPress that are tremendously helpful. One is for your blog posts and the other is for your RSS feeds. Either one works fine, and you can use both plugins together because your RSS feed subscribers don’t need to visit your blog to read your blog posts. You’ll see why in a minute.
AddSig For WordPress
AddSig from DagonDesign is useful and allows you to add a signature to all of your blog posts without any hassle at all. The drawback to this plugin is you need to install it when you first start using your blog. If you’ve been manually putting your blog signature in all of your posts then you add the AddSig plugin later, you’ll have two signatures at the bottom of all the posts you put your manual signature into. It will look stupid and you’ll have to go in and delete your manual signature. If you start using AddSig and then stop using it later, all of those posts that had your signature put in them will no longer have it. So you either need to use it and stick with it or not use it at all. If you do use it, it’s a great way to brand yourself using your signature.
sig2feed For WordPress
sig2feed by Smackfoo is an even better tool, in my opinion. This plugin allows you to add a signature at the bottom of all of your RSS feeds. The drawback is, in order to use it, you have set WordPress on full feed display rather than summary. If you set it for summary then the signature won’t be seen by your RSS subscribers.
So why would you want to use it then? Because you can use it as an advertising tool to make special offers that go out only to RSS feed subscribers. On your blog somewhere, advertise that your RSS feed subscribers gain the added benefit of reading full blog posts in their feed without having to visit your blog. Many people will sign up for the feed for that reason. If you sell advertising in your RSS feed then you put that advertising in your signature as a text link and Google won’t ding you for that but your subscribers can see it. Be careful though that you don’t overdo this; you’ll lose subscribers.
Also, you can make special offers to your RSS feed subscribers. If you sell things on your blog then you can make special offers that only go out to your feed subscribers. Advertise that on your blog somewhere by letting them know that they’ll get discounts, coupons, and special offers by signing up for your feed. They’ll do it and you place those special offers in your signature.
