Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
Perhaps I don't understand your question's intent or situation properly... but generally speaking, you can simply provide a link on your page, esp. at appropriate times e.g. when something in user content already added to the page suggests such a widget, ... provide a link to the widget(s) appropriate to the content.
If this does not address your question at all, please let me know. I will try to help further. Thanks.
The question is 3 ways how to reach webmasters.
It sounds like you are suggesting I just put something on my website.
I am looking for possibly 3 webmaster forums or other places I could promote the widgets to a large number of webmasters.
I see, I think.
I would not really know the answer to that specific question. With regrets, I must Opt Out, opening the case to other Experts in this category.