I'm looking to print, mount, and frame a bunch of photos I've taken. I've normally used poster-style frames (borderless and with no mat), but I'm beginning to develop an aesthetic preference for matted photos. I recall hearing at some point that there's a special sort of tape one should use when mounting the photo to a mat board, but I can't remember what it was. Is it a special acid-free tape so it doesn't eat away at the picture over time?
What should I look for in tape or other adhesive for the purpose of mounting a photo to a mat board? Is there a particular brand that is more revered than others?