Real magic spells aren't always that easy to recognize, and in fact it's really not that easy to say which ones are real and which ones aren't.
I've said before that a spell is like a recipe, and any recipe that makes a delicious dish is a real one no matter where you get it from or if you create it out of your own head. The results are what makes it real. Same goes for spells.
I'd have to say it does. Some websites offer up all kinds of "real spells" that have no supplies to them, and involve almost no work on your part. Writing a name on a piece of a paper and wishing really hard is not a magic spell.
Mixing a bunch of really unrelated materials together is another way of making a poor spell. Red roses aren't going to do much in a financial abundance spell, no matter how hard you try. If you know know the magickal properties of things yet, get a good spell correspondence guide to help.
The best way to know if you're getting a decent spell is to do a little thinking before you start lighting up candles. Are the components of the spell suitable for that purpose? Is there enough effort going in to it? Is it promising ridiculously impossible results? These are the things to watch out for to avoid poor or useless spells.
A real magic spell will have appropriate materials that suit the purpose, not just something that sounds cool, and it will have you taking several steps to complete the ritual. There should be attention to timing and how you focus your thoughts too. That is the kind of spell that deserves to be in your Book of Shadows.
I'd like to think that my collection of spells on this site fit the bill but you'll have to try a few to find out. The ultimate test of a real spell is the results. If your spell brings you want, then you have a winner on your hands.