How do I search by topic?

See the open box at upper r. hand of page – with the magnifying icon next to it? You can try to type some tags, separated by commas, there. Something simple for starters; ie; food, cooking, recipes..or….gardening, plants. Or try your recent tags. Then, hit “return” or click on icon.

Do you know if this works on the iPhone? I am not seeing the mag. glass. Do I need to pull the laptop out?

Not a clue about the iPhone. You prob. need the laptop.

Resend the question w. iPhone as a tag; you will be inundated w. replies. I can barely manage the gadgets I have in my life already.

Not working on iPhone,only on computer.
Try in another page,on GOOGLE search : fluther.com [object of interests].

RIght above the “questions” area are two words: topic and date. The default seems to be “date” so you get the most recently asked questions on your page. But if you click on “topic” there’s a wonderful page of all the topics, in different size type for the most asked questions, and these will lead you to various topics of interest.