"A picture is worth a thousand words," ... but it takes the same disk space as about 50,000 words...
I save quite a lot of "web images," mainly of paintings and other art works. They're "indexed" in Word, with an image and description for each on a separate page. The image files are a bit larger than typical web postings (60 - 100 KB or so usually, some up to 3 or 4 MB). I find I can paste a picture per page up to about 60 or 70 pages before I hit the 32 MB theoretical maximum Word file size. I have gone to around 90 MB in a single Word document, but it gets "fragile." Forty or fifty pages of pictures would be the file-size equivalent of more than a thousand pages (or maybe 10,000 pages) of plain text, with the image sizes I usually use.
For most users I'd generally recommend no more than about a dozen images per document, unless you make thumbnails of the images and paste only thumbnails (very small image files) into the document. With 15 - 20 KB images you could go to a couple of dozen - maybe. Word can handle a lot more, but it's easy to hurt yourself when you push the boundaries.